Uriel Kaufmann

Positivity results for indefinite sublinear elliptic problems via a continuity argument

Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu · Journal of Differential Equations · 2017 · 19 citations

Elliptic Equation, Engineering, Continuity Argument +6

On Principal Eigenvalues for Periodic Parabolic Problems with Optimal Condition on the Weight Function

T. Godoy, Uriel Kaufmann · Journal of Mathematical Analysis and Applications · 2001 · 12 citations

Optimal Condition, Principal Eigenvalues, Parabolic Equation +5

On strictly positive solutions for some semilinear elliptic problems

T. Godoy, Uriel Kaufmann · Nonlinear Differential Equations and Applications NoDEA · 2012 · 12 citations · Full text

Elliptic Equation, Positive Solutions, Elliptic Function +2

Uniqueness and positivity issues in a quasilinear indefinite problem

Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu · Calculus of Variations and Partial Differential Equations · 2021 · 12 citations

Elliptic Equation, Positivity Issues, Variational Inequality +2

Positive solutions of an elliptic Neumann problem with a sublinear indefinite nonlinearity

Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu · Nonlinear Differential Equations and Applications NoDEA · 2018 · 11 citations · Full text

Elliptic Equation, Positive Solutions, Free Boundary Problem +6